I recently did a performance for a radio station and they had a photographer take pictures of the event. The station used the photos in their materials and so did the photographer. I just contacted him and asked if I could purchase the photos from him to use in my materials. Cost me $350, but I got 3 dozen high quality images that I can now use in my materials. They're people, just talk to them. Build a relationship with that photographer and you never know where it might lead.